Certificate of death for Mary Ann (Yuncker) Voisin [00020], daughter of Jacob P. Yuncker [00022] and Anna Margaret (Pohl) Yuncker [00023]. Cause of death was Auricular fibrillation with cardiac decompensation. Auricular fibrillation is irregular and rapid contractions of the auricles of the heart working independently of the ventricles. Cardiac decompensation is failure of circulation.